#!/usr/bin/env python3
"""CLI `claude` fals pentru teste: citeste JSONL pe stdin, emite JSONL pe stdout.

Scenariul se alege din FAKE_CLAUDE_SCENARIO:
  normal   assistant + result pentru fiecare mesaj
  unknown  tip necunoscut + linie non-JSON inainte de assistant/result
  tools    tool_use + tool_result + text + result
  eof      se termina inainte de `result`
  crash    scrie pe stderr si iese cu cod 1
  env      raporteaza CLAUDE_DISCORD_THREAD_ID / _SESSION_ID din mediul propriu
  slow     "lucreaza" FAKE_CLAUDE_DELAY secunde, colecteaza mesajele venite intre timp
           (asa se testeaza steering-ul mid-tur) si le enumera in `result`
"""

from __future__ import annotations

import json
import os
import select
import sys
import time


def emit(obj) -> None:
    sys.stdout.write(json.dumps(obj, ensure_ascii=False) + "\n")
    sys.stdout.flush()


def parse_args(argv):
    sid, model = None, "sonnet"
    for i, a in enumerate(argv):
        if a == "--resume" and i + 1 < len(argv):
            sid = argv[i + 1]
        elif a == "--model" and i + 1 < len(argv):
            model = argv[i + 1]
    return sid, model


def text_of(line: str) -> str:
    try:
        obj = json.loads(line)
    except ValueError:
        return line.strip()
    msg = obj.get("message") or {}
    content = msg.get("content")
    if isinstance(content, list):
        return "".join(b.get("text", "") for b in content if isinstance(b, dict))
    return str(content or "")


def assistant(sid: str, text: str) -> None:
    emit({"type": "assistant", "session_id": sid,
          "message": {"role": "assistant", "content": [{"type": "text", "text": text}]}})


def result(sid: str, text: str, ms: int = 10) -> None:
    emit({"type": "result", "subtype": "success", "session_id": sid, "is_error": False,
          "duration_ms": ms, "num_turns": 1, "result": text,
          "total_cost_usd": float(os.environ.get("FAKE_CLAUDE_COST", "0.0123"))})


def drain(deadline: float) -> list[str]:
    """Citeste orice mesaj suplimentar pana la deadline (steering mid-tur)."""
    extra = []
    while True:
        left = deadline - time.monotonic()
        if left <= 0:
            return extra
        r, _, _ = select.select([sys.stdin], [], [], min(left, 0.05))
        if r:
            line = sys.stdin.readline()
            if not line:
                return extra
            extra.append(text_of(line))


def main() -> int:
    scenario = os.environ.get("FAKE_CLAUDE_SCENARIO", "normal")
    sid, model = parse_args(sys.argv[1:])
    sid = sid or os.environ.get("FAKE_CLAUDE_SID", "sid-fake-0001")
    emit({"type": "system", "subtype": "init", "session_id": sid, "model": model,
          "cwd": os.getcwd(), "tools": ["Bash", "Read"]})
    if scenario == "crash":
        sys.stderr.write("fake_claude: boom, ies cu 1\n")
        sys.stderr.flush()
        return 1

    for line in sys.stdin:
        prompt = text_of(line)
        if scenario == "unknown":
            emit({"type": "rate_limit_event", "session_id": sid, "detail": "test"})
            sys.stdout.write("asta nu e JSON\n")
            sys.stdout.flush()
        if scenario == "tools":
            emit({"type": "assistant", "session_id": sid, "message": {"role": "assistant", "content": [
                {"type": "tool_use", "id": "tu_1", "name": "Bash", "input": {"command": "ls"}}]}})
            emit({"type": "user", "session_id": sid, "message": {"role": "user", "content": [
                {"type": "tool_result", "tool_use_id": "tu_1", "content": "fisier1\n"}]}})
        if scenario == "eof":
            assistant(sid, "incep si mor")
            return 0
        if scenario == "slow":
            delay = float(os.environ.get("FAKE_CLAUDE_DELAY", "1.0"))
            assistant(sid, "lucrez...")
            extra = drain(time.monotonic() + delay)
            msgs = [prompt] + extra
            result(sid, "mesaje primite: " + " | ".join(msgs), int(delay * 1000))
            continue
        if scenario == "env":
            assistant(sid, "raportez mediul")
            result(sid, "thread={} sesiune={} marker={}".format(
                os.environ.get("CLAUDE_DISCORD_THREAD_ID", "-"),
                os.environ.get("CLAUDE_DISCORD_SESSION_ID", "-"),
                os.environ.get("MARKER_DE_TEST", "-")))
            continue
        assistant(sid, f"ecou: {prompt}")
        result(sid, f"ecou: {prompt}")
    return 0


if __name__ == "__main__":
    sys.exit(main())